LTC3729L-6 Datasheet, PDF (26/28 Pages) Linear Technology – PolyPhase, Synchronous Step-Down Switching Regulator

LTC3729L-6
TYPICAL APPLICATIO S
0.33µF
1000pF
0.1µF
47k
6.04k
100pF
6800pF
27.4k
470pF
1
EAIN
2
PLLFLTR
3
PLLIN
4
PHASMD
5
6 ^ITH
SGND
7
8
VDIFFOUT
VOS–
LTC3729L-6
24
BOOST1
23
VIN ₂₂
BG1
21
EXTVCC ₂₀
INTVCC ₁₉
PGND
18
BG2
17
BOOST2
24k
75k
1000pF
PGOOD
1000pF
10k
0.01µF
0.1µF
100pF
1
EAIN
2
PLLFLTR
3
PLLIN
4
PHASMD
5
6 ^ITH
SGND
7
8
VDIFFOUT
VOS–
LTC3729L-6
24
BOOST1
23
VIN ₂₂
BG1
21
EXTVCC ₂₀
INTVCC ₁₉
PGND
18
BG2
17
BOOST2
NC
1000pF
0.47µF
1µF 6.3V
0.47µF
10k
L1
0.003Ω
M1
10Ω
1µF
22µF
6.3V
M2
M3
2×150µF 16V
GND
M4
M5
M6
D1
MBRS
340T3
D2
MBRS
340T3
3×470µF, 4V
POSCAP
V_OUT1
3.3V/90A
L2
0.003Ω
V_IN
12V
0.47µF
1µF 6.3V
0.47µF
L3
0.003Ω
M7
10Ω
1µF
22µF
6.3V
M8
M9
2×150µF 16V
GND
D3
MBRS
340T3
3×470µF, 4V
POSCAP
D4
MBRS
M10
M11
M12
340T3
L4
0.003Ω
10k
0.01µF
0.1µF
100pF
V_IN: 12V
V_OUT: 1.3V TO 3.5V AT 90A
SWITCHING FREQUENCY = 400kHz
MI – M24: IRF7811W OR FDS6682 OR Si7860DP
L1 – L6: 1µH PANASONIC ETQP6F1R0S
26
1000pF
1
EAIN
2
PLLFLTR
3
PLLIN
4
PHASMD
5
6 ^ITH
SGND
7
8
VDIFFOUT
VOS–
LTC3729L-6
24
BOOST1
23
VIN ₂₂
BG1
21
EXTVCC ₂₀
INTVCC ₁₉
PGND
18
BG2
17
BOOST2
NC
1000pF
0.47µF
1µF 6.3V
0.47µF
L5
0.003Ω
M13
10Ω
1µF
22µF
6.3V
M14
M15
2×150µF 16V
GND
D5
MBRS
340T3
3×470µF, 4V
POSCAP
M16
M17
M18
L6
D6
MBRS
340T3
0.003Ω
3729L-6 TA03
Figure 11. High Current 3.3V/90A 6-Phase Application
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